baber/WOPTO huggingface dataset:
Patent GB-1420581-A (GB)
Title: Pressure sensitive devices
IPC: G06F3/041
Filed: 1974-02-08
Abstract: 1420581 Selective signalling; pattern recognition MARCONI CO Ltd 4 Nov 1974 [8 Feb 1974] 05982/74 Headings G4H and G4R [Also in Division H3] A pressure-sensitive device comprises a sheet of plastics material having a first array of electrical conductors on one large area surface in crossing relationship with a second array of conductors on the other large area surface to provide a plurality of cross-over points, the plastics sheet being electrically poled at least in the regions of the cross-over points whereby pressure applied at a cross-over point provides an electrical signal on at least one of the two conductors crossing at that point. As disclosed, the plastics material is polyvinylidene fluoride. In a first embodiment, pressing a cross-point produces a signal on a row conductor and a column conductor through respective thresholding amplifiers, these signals being encoded. The device may be used to select an item on a computer display, or provide map references. A second embodiment, which can also be used in recognition of signatures or written characters by feeding a computer or display, has the row conductors each made of two dissimilar thin films to provide a diode at each cross-point. The column conductors are scanned by being connected to earth in turn (those not so connected being connected to a negative source to back-bias the diodes), outputs being taken via amplifiers from the row conductors.
Patent GB-564373-A (GB)
Title: Improvements in or relating to the sealing of pyrotechnics
IPC: F42B10/56
Filed: 1943-04-15
Abstract: 564,373. Pyrotechnic devices. SCHERMULY, C. D., SCHERMULY A. J., and SCHERMULY, C. April 15, 1943, No. 6039. [Class 9 (ii)] A seal for a pyrotechnic device such as a cartridge or, as shown, a rocket, comprises a disc 3 of " Bakelised " paper secured to the choke 2 by shellac and a ring 4 of " Bakelised " millboard or cardboard, the ring being secured to the disc and to the casing 1 by shellac. The surfaces 5 may be painted.
Patent GB-386813-A (GB)
Title: An improved projecting mirror
IPC: G02B5/10
Filed: 1932-02-29
Abstract: 386,813. Reflectors. CORNING GLASS WORKS, Walnut Street, Corning, New York, U.S.A.-(Assignees of Lebby, S. L. ; 183, East 1st Street, Corning, New York, U.S.A.) Feb. 29, 1932, No. 6060. Convention date, Feb. 28, 1931. [Class 75 (ii).] A catadioptric reflector has a reflecting surface 2 and a refracting surface 3 formed as a surface of revolution, the generatrix 4 of which is symmetrical about an axis 5 inclined to the optical axis 6 of the reflector. The generatrix 4 is the arc of a circle, the centre of which is offset from and revolves in a circle around the axis 6. Other curves may be used. Relative dimensions are given.
Patent GB-493695-A (GB)
Title: Improvements in or pertaining to the transmission and/or reception of electromagnetic waves
IPC: H01Q13/00
Filed: 1937-03-01
Abstract: 493,695. Wireless signalling. BORMANN, O. March 1, 1937, No. 6081. Convention date, March 6, 1936. [Class 40 (v)] Centimetre waves are radiated from, or received by a plane or curved surface connected through a slit-like opening to a dielectric guide. As shown in Fig. 2, the dielectric guide 3 ends in a slot extending the width of a parabolic radiating surface 4, which may be fitted with end plates 5 to prevent diffraction. In Fig. 3, the surface is formed with half-wave " suppressors " 7, so as to radiate a co-phasial wave. Or the aerial may consist of a bank of parabolic elements similar to that of Fig. 2, (Fig. 4, not shown). In Figs. 6 and 7 the outer metallic conductor 19 of the dielectric guide is formed with slits, such as 20, 22, respectively, through which energy passes to or from the radiating surface. The feed-line may be of the type described in Specification 440,238. In Fig. 9a the dielectric guide 30, 31 extends inside the radiator 28, and the slit 32 is located just beyond the focal point, so as to create a resonance effect. In this case the width of the slit 32 is immaterial and it may be directed towards the apex of the reflector. Fig. 13 shows a double reflector 41 which is excited through a slit 44 to radiate a thin disc-like field, suitable for broadcasting, bars 45 being provided to produce closed current loops by resonance. Alternatively the feed-line 47 may project axially into the curved surface, Fig. 14, and be formed with a slit 49. The radiating surface may be in the form of an ellipsoid of revolution, Fig. 15 (not shown). The Specification as open to inspection under Sect. 91 also describes an arrangement in which two concentric transmission-lines 38, 39 and 38<1>, 39<1>, Fig. 13 (Cancelled), feed a wire loop 40 the centre of curvature of which lies at the focal point of the radiator or reflector 37. The hollow reflector may be made of tapering or logarithmic section between the feed slot and its outer end. The dielectric guide may merge gradually, in a logarithmic curve, into the flared radiator, and coupling to the slit may be through a condenser instead of by direct connection. The disclosure now made in Specification 440,238 is also included. This subject-matter does not appear in the Specification as accepted.
Patent GB-909226-A (GB)
Title: Means for erecting mine roadway supports, especially circular supports
IPC: E21D11/40
Filed: 1960-02-22
Abstract: 909,226. Boreholes. EGGEMANN, W., and CAMPENHAUSEN, E. VON, [trading as SCHWARZ KOMM.-GES., HERMANN]. Feb. 22, 1960 [Feb. 21, 1959; May 11, 1959; May 23, 1959], No. 6082/60. Class 85. An excavating machine 10 having rubble removing conveyers 12, 14, is provided with a carrier 16 for segmental wall supports together with a rotary ring 19 for assembling the supports, said member 19 sliding on rollers 20 carried by the member 16 and being driven by a motor 24 through a pinion 23. The segments are held on the ring 19 by adjustable stops 26 and claws 27, see also Figs. 11, 12 and 13 (not shown), and are interconnected in known manner to form a support ring which is positioned adjacent the completed reinforced section of the tunnel by cylinders 35, the claws 27 moving radially outwards to urge the ring into contact with the tunnel wall. The erecting apparatus 16, 19 is connected to the excavating unit by at least one fluid-operated jack 38 which is adapted to function when grippers 17 on the unit 16 are retracted. The excavating unit may be used in conjunction with two erecting-machines, see Figs. 5, 6 and 7 (not shown). The carrier 16 may be constructed from sections each consisting of inner and outer curved plates interconnected by I-section steel bars, the sections being bolted together and to a wedge-shaped top portion, see Figs. 15, 16 and 17 (not shown). In a further modification, Figs. 18 and 19 (not shown), the segmental supports are urged radially outwards by push-rods constructed as racks and drivingly interconnected by universal couplings.
Patent GB-398194-A (GB)
Title: Improvements in or relating to the manufacture of thermoplastic resinous materials
IPC: B29C37/00
Filed: 1932-02-29
Abstract: Thermoplastic resinous material, for example polymerized vinyl acetate, is deaerated by subjecting it to heat and pressure while it is covered by an inert liquid.  The temperature used will be sufficient to soften the mass without effecting curing and thus causing the consequent loss of thermo-plasticity.  Water, alcohol, castor and hydrocarbon oils are given as examples of inert liquids, which preferably should be solvents of residual volatile matter where such is present in the mass.  In an example a block of polymerized vinyl acetate is placed in a tin vessel, covered with hydrocarbon oil and heated in an autoclave to 60 DEG  C. under a pressure of 400 lbs. per square inch.  The temperature then is allowed to fall gradually to 20 DEG  C., which takes about twelve hours, before the pressure is released.  The bubbles then are all found at the surface of the block and can be removed with the surface layers.  In another example methyl methacrylate plastic (obtained by polymerizing methyl methacrylate in admixture with benzyl benzoate in the presence of benzoyl peroxide) is heated to 95 DEG  C. in an open vessel surrounded and covered by high-boiling-point liquid paraffin in an autoclave at a pressure of 400 lbs. per square inch.  Cooling to room temperature takes place over a period of 24 hours.ALSO:Thermoplastic resinous material, for example vinyl acetate, is de-aerated by subjecting it to heat and pressure while it is covered by an inert liquid.  The temperature used will be sufficient to soften the mass without effecting curing and thus causing the consequent loss of thermo-plasticity.  Water, alcohol, castor and hydrocarbon oils are given as examples of inert liquids, which preferably should be solvents of residual volatile matter where such is present in the mass.  In one example a block of polymerized vinyl acetate is placed in a tin vessel, covered with hydrocarbon oil and heated in an autoclave to 60 DEG  C. under a pressure of 400 lbs. per square inch. The temperature is then allowed to fall gradually to 20 DEG  C., which takes about 12 hours, before the pressure is released.  The bubbles are then all found at the surface of the block and can be removed with the surface layers.  In another example methyl methacrylate is heated to 95 DEG  C. in an open vessel surrounded and covered by high-boiling-point liquid paraffin in an autoclave at a pressure of 400 lbs. per square inch.  Cooling to room temperature then takes place over a period of 24 hours.
Patent GB-821269-A (GB)
Title: Animal feed
IPC: A23K20/121
Filed: 1957-02-22
Abstract: Feed utilization by cattle, pigs, poultry and other animals is improved by incorporating in the feeds a heterocyclic carboxylic acid hydride, a hydrazone thereof, or a salt or metal complex of such a compound.  The additives are exemplified by benzal isonicotinic acid hydrazide, salicylal isonicotinic acid hydrazide, the polymeric compound from formaldehyde and isonicotinic acid hydrazide, p-hydroxypropiophenone hydrazone of isonicotinic acid hydrazide, isonicotinic acid hydrazide, the cobalt sulphate complex of isonicotinic acid hydrazide, pyromucic acid hydrazide, p-chlorobenzal isonicotinic acid hydrazide, and the ferrous salt complex of salicylal isonicotinic acid hydrazide, incorporated in the feed to the extent of 0,001-1%.
Patent GB-741674-A (GB)
Title: Improvements relating to clothes washing machines
IPC: D06F23/00
Filed: 1953-03-05
Abstract: 741,674. Washing and drying machines. GENERAL ELECTRIC CO. March 5, 1953 [March 5, 1952], No. 6149/53. Class 138 (2). [Also in Group XIII] In a washing machine having a cylindrical spin tub 3 mounted to rotate about a vertical axis within a casing 2, a flexible annular guard member 42 supported by the casing 2 or a door 36 therefor, projects into the upper end of the tub 3 so as to prevent the passage of articles between the tub and casing, and can yield so that it will not interfere with the rotation of the tub if excessive gyration occurs during centrifuging. The guard member 42 also deflects the water discharged from an inlet nozzle 31 into the tub 3 in the form of a fanshaped spray. The guard member 42 may be of rubber and may be secured by means of a band 44 to a downwardly extending grooved flange 43 of the casing 2. It preferably extends as far as the top of overflow ports 38 in the tub 3 and may be provided with axial cuts to provide plurality of flaps. The invention is applied to a known type of washing machine having an automatically or manually controlled cycle of agitation, spray rinsing, overflow rinsing and spin-drying.
Patent GB-608725-A (GB)
Title: Improvements in coloured fluorescent materials and articles
IPC: C09K11/06
Filed: 1946-02-28
Abstract: 608,725. Luminescent materials. BRITISH CELANESE, Ltd. Feb. 28, 1946, No. 6283. Convention date, March 1, 1945. [Class 39 (i)] Materials and articles having substantially the same colour in daylight and when subjected in the dark to ultra-violet comprise a coloured surface carrying a transparent layer containing a fluorescent organic dyestuff. The coloured surface may be wood, cement, ceramic or metal covered with a suitable pigmented coating, or opaque coloured glass, refractory ceramic, cellulose derivative or synthetic resin, i.e. phenol, urea or melamine-formaldehyde condensation products, alkyd or vinyl resins, polystyrene or methacrylate resins. The colouring matter is for yellow, ochre, sienna, chrome or tin-bronze; for red, Venetian red, red lead or vermillion; for blue, ultramarine, Prussian blue or Milori blue; for green, Guignet's green, verdigris or chrome green. The pigments may be mixed and to increase opacity a white pigment may be included, e.g. tin, antimony, zinc or aluminium oxides, titanium or silicon dioxides; barium, lead or calcium sulphates, tin phosphate, zinc carbonate, barium or calcium borates, clay, talc or mica. The transparent layer may be glass, a cellulose derivative, a phenol formaldehyde resin or any of the thermoplastic substances mentioned above, e.g. polystyrene, polymerised methyl methacrylate, polyvinyl chloride, polyvinyl acetate. Suitable plasticizers for the cellulose derivatives in the base or the transparent layer are dimethyl phthalate, tricresyl phosphate, diethyl phthalate, triacetin, tripropionin, triphenyl phosphate, dibutyl phthalate, dimethoxy ethyl phthalate, dibutyl tartrate, ethyl toluene sulphonamide, camphor and methyl phthallyl ethyl glycollate in amounts up to 60 per cent by weight of the cellulose. The examples refer to Brilliant Sulfo Flavine (green fluorescence), Rhodamine B (orange) Calcozine Red 6G Extra (bright yellow) and calco Acetate Fluorescent Blue (clear bright blue), as suitable fluorescent dyestuffs. The layers may be united by adhesive under heat and pressure by injection or compression moulding, or a transparent film formed by brushing or spraying on a composition containing the fluorescent material.
Patent GB-338464-A (GB)
Title: Improvements in the cases of gas pressure gauges
IPC: G01L7/00
Filed: 1930-02-26
Abstract: 338,464. Etablissements E. Jaeger. Feb. 28, 1929, [Convention date]. Elastic-diaphragm pressure gauges.-The walls 41, 41a of a capsule more especially for use with pneumatic pressure means for measuring the depth of liquid in a tank are constituted by at least two superposed sheets of material such as gold-beater's skin, the metal crown 45 securing the edges of the wall bearing on the edges through the medium of paper washers 62 and of at least one washer 63 made of a metal such as aluminium. The connection 26 supplying pressure fluid is secured to the centre of one wall and a sheet 61 of paper or other material non- adhering to gold-beater's skin is provided for preventing the inner surface of gold-beater's skin sticking together. The crown 45 is of U-shaped cross section and the metal washer 63 is preferably wider than the flanges of the crown. When a single washer 63 is used, it is arranged on that side where the folding down of the crown 45 is effected.
Patent GB-1401946-A (GB)
Title: Immobilized glucose isomerase
IPC: C12N11/16
Filed: 1974-02-13
Abstract: 1401946 Immobilized glucose isomerase BAXTER LABORATORIES Inc 13 Feb 1974 [15 Feb 1973] 06434/74 Heading C3H [Also in Division C2] An immobilized glucose isomerase enzyme composition comprising whole microbial cells containing glucose oxidase enzyme covalently linked to a diazotized aromatic primary diamino compound is prepared by reacting whole microbial cells with a diazotized primary diamino compound. Preferred diamino compounds are 2,6-diaminopyridine; 2,4-diamino-6- hydroxypyrimidine; 3,6-diaminoacridine; or acriflavine and others are mentioned. The preferred source of microbial cells is Streptomyces Phaeochromogenes and Lactobacillus brevis is also favoured. Other microorganisms are listed.
Patent GB-735203-A (GB)
Title: Improvements in or relating to dental prostheses
IPC: A61C13/30
Filed: 1953-03-09
Abstract: 735,203. Artificial teeth. SANDRI, F. March 9, 1953 [Feb. 7, 1953], No. 6463/53. Class 81 (2). An anchoring device for a removable dental prosthesis comprises one or more pins 1 adapted for fixing to a tooth part 2 so as to project above the alveolar ridge 11, a corresponding number of blind bores 6 in the prosthesis, each bore 6 being provided with a centrally perforated closure member to form a cylindrical chamber in which a coaxial hollow yielding cylindrical member 10 is provided to receive a ball head 3 of one of the pins 1, the outside diameter of the cylindrical member 10 being greater than the perforation and the inside diameter being slightly smaller than the ball 3. The pin 1 is cemented within the root canal of a tooth stump 2 which is provided with a cap 12 having a tubular part 112 which projects within the tooth stump 2 and surrounds the pin 1. The ball 3 is screwthreaded to the pin 1. The cylindrical member 10 is in the form of a spring. In an alternative construction (not shown) the pin is secured to the root cap 12 and the cylindrical member is in the form of a longitudinally split sleeve.
Patent GB-1420887-A (GB)
Title: Picture transmission systems
IPC: H04N7/00
Filed: 1974-02-13
Abstract: 1420887 Television; magnetic bubble systems MULLARD Ltd 13 Feb 1974 06477/74 Headings H4F and H3B The video signal derived by a television transmitter scanning in a boustrophedral pattern is reproduced at a receiver by means of a visible light source 1 illuminating a body 4 located between crossed polarizers 2, 3 and having a transparent display area supporting a magnetic bubble domain shift register channel 5 whose path corresponds to the boustrophedral scan pattern at the transmitter, an analogue-todigital converter being located at the transmitter or receiver to convert the analogue video signal into serial binary information suitable for feeding into the bubble shift register channel. A coil 6 is shown for providing a bubble supporting magnetic bias field normal to the body 4 although permanent magnetic means may be provided. The bubbles 7 in the shift register each have a direction of magnetization opposite to that of the surrounding material and so effect an opposite Faraday rotation. Body 4 may comprise the monocrystalline bismuth substituted garnet Bi 0 . 8 Sm 2 . 2 Ga 1 . 0 Fe 4 . 0 O 12  and may be cut from a crystal, polished and supported on a glass plate or it may be epitaxially grown on a transparent non-magnetic crystal substrate such as a rare-earth gallium garnet. The display may not be illuminated during operation of the shift register while the bubbles are propagated along the channel 5. The polarizer 2 and analyser 3 may be combined, a mirror being located behind the body 4. To view the display it is magnified by a lens. The A-D converter may include means for coding the serial binary information so as to enable the display to show a grey scale pattern, e.g. by modulating the spacing between the bubbles.
Patent GB-577652-A (GB)
Title: Improvements in or relating to the driving gear of a charger device of an aircraft engine
IPC: F02B33/00
Filed: 1944-04-06
Abstract: 577,652. Variable-speed toothed gearing. PACKARD MOTOR CAR CO. April 6, 1944, No. 6495. Convention date, April 19, 1943. [Classes 80 (i) and 80 (ii)] [Also in Groups XXVI, XXVII and XXIX] In a driving arrangement for the charging impeller of an internal combustion engine which is driven at either of two speeds, the change from the lower to the higher speed being effected by selecting means operated electrically, e.g., through a solenoid by an aneroid device, the solenoid is in series with an earthed holding coil which is energized when the solenoid is energized. The change of speed is effected by a brake operated by a fluid under pressure the supply of which is controlled by a valve 63 which is operated as shown in Fig. 2. It is opened by a solenoid 60 comprising a pushing coil 61' and a holding coil 62. The circuit from a battery 67, fuse 69 and manual switch 65 is made by a switch 64 operated by an aneroid device 61 arranged to close the switch at a determined altitude. It is completed through terminals 74, 74<1> on a switch 66 and the holding coil. The switch 66 moves from an earthed contact 80' to a contact 80 whereby a signal lamp 82 is included in the circuit. The impeller is driven from the engine shaft 10 through a pinion 12 which engages three hollow gears 26 mounted in a casing 11 each of which drives through epicyclic gearing. This comprises a cage formed by members 28, 28' and 28" bolted together to carry planet gears 29, a sun gear 31 on shaft 34 and a ring gear 30 meshing with a gear 25 carried by the impeller shaft 21. A one-way overrunning clutch comprised by a hub 35 with cam surfaces and rollers 36 causes direct drive when the shaft 34 is free to rotate. This shaft is held to produce the higher gear by a brake comprising multiple clutch plates 40 engaged alternately with a hub 42 and a cylinder 41 fixed in a chamber formed in end wall 32 and a plate 38. The plates are engaged by fluid under pressure acting on a piston 43 against a spring 44. This fluid is supplied, for example, from the lubricating system, through a groove 46 and the supply is controlled by the valve 63. In the closed position a passage is provided for relief and drainage of oil from the system.
Patent GB-560631-A (GB)
Title: Improvements in or relating to water-soluble riboflavin compositions
IPC: A61K31/525
Filed: 1942-05-13
Abstract: A soluble preparation containing riboflavin which is not excessively alkaline for the purpose of injection comprises at least 0.02 per cent riboflavin and an alkali metal borate in amount corresponding to at least one gram atom of boron per gram-mole of riboflavin.  The alkali borate may be sodium tetra borate or sodium metaborate.  Of these the former is preferred as the pH of the resulting solution is lower and the solution is more suitable for injection.  The corresponding potassium salts may also be used.  The ingredients may either be mixed in solution or dry intimate mixtures of sodium or potassium borates may be prepared.  There may be added to the solution other vitamins or other therapeutic factors.  In examples: (1) a mixture is made of riboflavin sodium hydroxide and sodium borate ( 1/100 mol. of each) in aqueous solution, and the double salt precipitated by a water miscible organic solvent such as acetone, ethyl alcohol, isopropyl alcohol, n-propyl alcohol or dioxane.  (2) An aqueous solution is formed of 1/100 mol of riboflavin, potassium hydroxide and potassium borate penta hydrate and precipitated with acetone.  (3) An aqueous solution is formed of 1/100 mol. of riboflavin and sodium hydroxide and to this is added 1/50 mol. of sodium metaborate.  (4) 1.5 Grams of riboflavin is dissolved in 145 ccs. of 0.1 N-caustic soda and the solution mixed with a solution of 6 grams of boric acid in 200 ccs. of water. The water is removed, e.g. by freezing and the resulting dry powder obtained by evaporation in vacuo in the frozen state sealed into ampules.  (5) An aqueous solution containing riboflavin and caustic soda is added to an aqueous solution containing thiamin chloride, vitamin B6, nicotinic acid amide, calcium pantothenate and boric acid.  The resulting solution is evaporated to dryness with precautions to prevent decomposition such as evaporation in vacuo in the frozen state.  (6) Riboflavin is mixed with sodium borate, if desired in the presence of an inert filler such as milk sugar.  The mixture may be dispensed either as a powder or in tablet form.  (7) Sodium borate is mixed with riboflavin, thiamin chloride, vitamin B6, calcium pantothenate, sodium nicotinate and also if desired an inert filler such as milk sugar.  This mixture also may be dispensed as a powder or in tablet form.